Which statement is true about the discontinuities of the function f(x)?

f(x)=x^2-4/x^3-x^2-2x

a. There is a hole x=2
b. There are asymptotes at x=0 and x=-1
c. There are asymptotes at x=0 and x=-1 and a hole at (2,2/3)
d. There are holes at x=-0 and x=-1 and an asymptote at x=-2